SWFConv is a Mac utility that can be used to convert your SWF clips to various video and audio formats. The application lets you choose from a wide variety of output profiles, allows you to customize their settings according to your needs, and provides you with quality results within moments.
This program might prove to be of good use whenever you wish to watch an SWF clip on your iPhone or other media device that doesn't offer you support for this format. By working with SWFConv you can convert the video to a format that's compatible with your gadget.
Besides helping you get rid of incompatibility issues between your videos and your media devices and software, this app also helps you make minimum alterations to your video files. For instance, it allows you to change their resolution, bit rate, etc.
Nonetheless, the program is missing some important features. It lacks support for batch conversion and doesn't allow you to trim or watermark the input files (features that are available in many apps of its kind) and attach subtitles to clips.
With that being said, I think you can find better solutions for converting SWF files to other media formats.